Title :
Field-weakening control for an IFO induction motor drive
Author :
Huang, M.S. ; Liaw, C.M.
Author_Institution :
Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
The transient performance improvement for an indirect field-oriented (IFO) induction motor drive with field-weakening is studied in this paper. In the proposed method, the saturation effect of magnetizing inductance is considered by representing it using a fitted quadratic polynomial of flux current. The flux current command is composed of three parts, namely the no-load, the loading compensated and the transient compensated components. The first one is represented by a third-order polynomial of rotor speed, which is estimated at no-load to consider the effects of nonlinear magnetizing inductance and the limitation of motor rated voltage. As for the latter two components, they are utilized to further weaken the field such that current tracking performances during loaded cases and transient period can be improved.
Keywords :
inductance; induction motor drives; machine vector control; magnetic flux; magnetisation; polynomials; rotors; IFO induction motor drive; current tracking performances; field-weakening control; fitted quadratic polynomial; flux current; flux current command; indirect field-oriented control; loaded cases; loading compensated components; magnetizing inductance; motor rated voltage limitation; no-load; nonlinear magnetizing inductance; rotor speed; saturation effect; third-order polynomial; transient compensated components; transient performance improvement; transient period; Character generation; Inductance measurement; Induction motor drives; Induction motors; Magnetic field measurement; Magnetic flux; Polynomials; Rotors; Saturation magnetization; Voltage;
Conference_Titel :
TENCON '02. Proceedings. 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering
Print_ISBN :
0-7803-7490-8
DOI :
10.1109/TENCON.2002.1182731